I also tried the *Aspire Nautilus* and Iclear 30 but I can't get any vapor or taste from them. I just want more flavor and "some" clouds!
Yes. If you put these * on a mech mod, "disappointing" would be an understatement.
An iClear30 (2.1ohms) on a mech is even worse.
You want something between a subohm tank at 0.3ohms (or whatever) and the 1.6/1.8ohms of a Nautilus.
It's not the fault of these tanks.... but you need to find your 'sweet spot' of watts and then buy something accordingly.
If I was using a mech I'd be targeting something around 1.0 ohm. For others, that might be 0.5ohms. Others 0.2, and so on.
(Don't blame the tanks, basically...)